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    <title>Title</title>
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    <a href="#i1">第一章</a>
    <a href="#i2">第二章</a>
    <a href="#i3">第三章</a>
    <a href="#i4">第四章</a>
    <div id = 'i1' style="height: 800px">第一章的内容</div>
    <div id = 'i2' style="height: 800px">第二章的内容</div>
    <div id = 'i3' style="height: 800px">第三章的内容</div>
    <div id = 'i4' style="height: 800px">第四章的内容</div>

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